Numerical Simulation of Water‐Rock Reaction for CO 2 Sequestration in Sandstone Reservoir
砂岩貯留層におけるCO2貯留の水-岩石反応の数値シミュレーション (AI 翻訳)
Yunhai Zhang, Shaoqing Wang, Li Qing, Jinlong Li, Song Yan, Xingyu Chen, Yan Bo
🤖 gxceed AI 要約
日本語
中国の吉林油田の塩水層を対象に、TOUGHREACTを用いてCO2-水-岩石反応の数値シミュレーションを実施。CO2注入によるpH、鉱物変質、イオン濃度の変化を分析し、pHが約4.8で安定すること、マグネサイトやモンモリロナイトなどの沈殿とアルバイトや方解石の溶解が同時に起こることを示した。空隙率と浸透率は増加するが、CO2注入能力への影響は小さい。
English
This study simulates CO2-water-rock reactions in the Jilin Oilfield brine layer using TOUGHREACT, analyzing pH, mineral transformation, and ion concentrations. Results show pH stabilizes around 4.8, with precipitation of magnesite, montmorillonite, kaolinite, illite, and dolomite, and dissolution of albite, chlorite, and calcite. Porosity and permeability increase slightly, but CO2 injectivity is barely affected, providing insights for saline aquifer storage.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本ではCCUSがカーボンニュートラル実現の重要技術と位置づけられ、苫小牧での実証事業などが進む。本研究成果は、貯留層内の反応メカニズムの理解に寄与し、日本のCCUSプロジェクトの評価や安全な貯留管理に参考となる。
In the global GX context
Globally, CCUS is recognized as essential for meeting net-zero targets, with projects in the North Sea, US, and elsewhere. This study provides detailed geochemical modeling that can inform site selection, injection strategies, and long-term storage security, contributing to the broader CCUS knowledge base.
👥 読者別の含意
🔬研究者:Provides a detailed geochemical simulation framework for CO2 storage, useful for modeling reactive transport in saline aquifers.
🏢実務担当者:Offers insights into mineral reactions that could affect injectivity and storage integrity, relevant for CCUS project planning and monitoring.
🏛政策担当者:Supports evidence-based policy for CCUS deployment by demonstrating technical feasibility and potential impacts on reservoir performance.
📄 Abstract（原文）
Climate change represents one of the most pressing global challenges facing humanity. Under the framework of the national climate change strategy, Carbon Capture, Utilization, and Storage (CCUS) is currently regarded as the only viable technology capable of achieving large‐scale, near‐zero‐emission utilization of fossil energy, thereby contributing significantly to the carbon neutrality goal of China. In this study, the brine layer of the Jilin Oilfield was selected as the research target, and numerical simulation of CO 2 ‐formation water‐rock reactions was conducted using the TOUGHREACT software. The effects of CO 2 injection on reservoir fluid pH, mineral transformation, and ion concentrations in formation water were systematically analyzed. The simulation results indicate that both dissolution and precipitation reactions occurred simultaneously in the acidic CO 2 solution, with the pH of the formation water stabilizing at approximately 4.8. Overall, the reaction system exhibited a tendency for magnesite, montmorillonite, kaolinite, illite, and dolomite to precipitate, while albite, chlorite, and calcite were prone to dissolution. Different mineral assemblages were generated at various stages of the reaction process. The dissolution of CO 2 increased rock porosity and permeability. However, the magnitude of these changes was relatively minor, exerting little influence on the CO 2 injection capacity. The findings of this study provide valuable experimental references and theoretical support for CO 2 sequestration in saline aquifers of the Jilin Oilfield.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/eng2.70694first seen 2026-08-15 05:28:40 · last seen 2026-08-16 05:38:03
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